<template>
   <header class="header">
      <h1>todos</h1>
      <input class="new-todo" placeholder="请输入任务名称" autofocus @keyup.enter="addList" v-model.trim="todoName" />
    </header>
</template>
 
<script>
export default {
  name: "MytodoListHeader",
  components: {},
  props: {},
  data() {
    return {
      todoName: "",
    };
  },
  computed: {},
  watch: {},
  created() {},
  methods: {
    // 添加内容给父组件发起请求
    addList() {

      if(!this.todoName) return alert('请输入内容')

      this.$emit("addList",this.todoName)
      // 清空输入框
      this.todoName = ''
    }
  }
};
</script>

<style scoped>
     
</style>